AZ-204 Quiz

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Storage Redundancy (1 / 16):

You work in a healthcare company that has stringent data regulations, requiring them to maintain patient data within the same region. They run a critical application on Azure, which can't afford any downtime or data loss. The application generates patient records that can't be recreated.

What type of Azure storage redundancy should your company consider to meet their high data availability and data governance requirements?
How does the recommended storage redundancy option work in terms of ensuring data resilience and adherence to data governance rules?
What might be the disadvantages for your company if they decided to choose Geo-Redundant Storage instead?

Answer:

Your company should consider Zone-Redundant Storage (ZRS). This option would ensure high data availability and also comply with their data governance requirements, as ZRS keeps all data within the same region.
ZRS replicates data across different availability zones within the same region. This means if one zone experiences issues, the data remains accessible from the other zones. As ZRS doesn't replicate data to a different region, it satisfies your company's data governance rules.
If your company chose Geo-Redundant Storage (GRS), they could potentially violate their data governance requirements. GRS replicates data to a secondary region, which might not be permissible for Epsilon's patient data. Also, GRS performs asynchronous replication, which could lead to potential data loss if a failure occurs before data is replicated.

Exam revision: April 11, 2025